Estimated blood volume and allowable blood loss
EBV by age group and the blood loss allowed before reaching a target hematocrit.
Inputs
0 of 4Actual (total) body weight
Patient group
%
%
Patient values are shared with every calculator.
When to use
- Planning transfusion thresholds for surgery.
Pearls and pitfalls
- Gross's original uses the average hematocrit; this simpler form is widely taught.
- Decisions should follow the clinical picture, not ABL alone.
Why use
Shows the blood-volume factor used.
- where
- k
- mL/kg by age group
- Hi, Hf
- Starting and lowest acceptable hematocrit, %